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adaptive-expressions

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"use strict"; /** * @module adaptive-expressions */ /** * Copyright (c) Microsoft Corporation. All rights reserved. * Licensed under the MIT License. */ Object.defineProperty(exports, "__esModule", { value: true }); exports.Add = void 0; const expressionEvaluator_1 = require("../expressionEvaluator"); const expressionType_1 = require("../expressionType"); const functionUtils_1 = require("../functionUtils"); const returnType_1 = require("../returnType"); /** * Return the result from adding two or more numbers (pure number case) or concatting two or more strings (other case). */ class Add extends expressionEvaluator_1.ExpressionEvaluator { /** * Initializes a new instance of the [Add](xref:adaptive-expressions.Add) class. */ constructor() { super(expressionType_1.ExpressionType.Add, Add.evaluator(), returnType_1.ReturnType.String | returnType_1.ReturnType.Number, Add.validator); } /** * @private */ static evaluator() { return functionUtils_1.FunctionUtils.applySequenceWithError((args) => { let value; let error; const stringConcat = !functionUtils_1.FunctionUtils.isNumber(args[0]) || !functionUtils_1.FunctionUtils.isNumber(args[1]); if ((args[0] == null && functionUtils_1.FunctionUtils.isNumber(args[1])) || (args[1] == null && functionUtils_1.FunctionUtils.isNumber(args[0]))) { error = "Operator '+' or add cannot be applied to operands of type 'number' and null object."; } else if (stringConcat) { if (args[0] == null && args[1] == null) { value = ''; } else if (args[0] == null) { value = args[1].toString(); } else if (args[1] == null) { value = args[0].toString(); } else { value = args[0].toString() + args[1].toString(); } } else { value = args[0] + args[1]; } return { value, error }; }, functionUtils_1.FunctionUtils.verifyNumberOrStringOrNull); } /** * @private */ static validator(expression) { functionUtils_1.FunctionUtils.validateArityAndAnyType(expression, 2, Number.MAX_SAFE_INTEGER, returnType_1.ReturnType.String | returnType_1.ReturnType.Number); } } exports.Add = Add; //# sourceMappingURL=add.js.map